SkinSkin is an organ of the integumentary system; which is composed of a layer of tissues that protect underlying muscles and organs. Skin is used for insulation, vitamin D production, sensation, and excretion (through sweat).

StomachThe organ between the esophagus and the small intestine. The stomach is where digestion of protein begins.

SIMILAR TERMS--------------------------------------

UlceratedHaving a local defect or excavation of the epithelium of an organ or tissue through the basement membrane.

UlcerationBreak in the skin, usually on lower legs or fingers, related to poor circulation and blood pooling.

Ulcerative colitisInflammatory disease of unknown cause which involves the mucosa of the colon. Onset may be acute and fulminant, and its course often continues chronically in an intermittent or continuous form. Diarrhea is a common symptom and bleeding an almost constant concomitant symptom.

PREVIOUS AND NEXT TERMS--------------------------------------

Unerupted toothA tooth that has not pushed through the gum and assumed its correct position in the dental arch.

Usher's SyndromeCharacterized by a severe sensori-neural hearing loss at birth and followed by the development of RP. Usher’s syndrome is the leading cause of deaf-blindness. Occurs in about 1 in 33,000 births. However, in the deaf population about 1 in 50 have Usher’s syndrome. No treatment is available, but see RP.

Uveal tractThe entire vascular coat of the eye composed of the iris, ciliary body, and choroid.

Ulcerative colitisInflammatory disease of unknown cause which involves the mucosa of the colon. Onset may be acute and fulminant, and its course often continues chronically in an intermittent or continuous form. Diarrhea is a common symptom and bleeding an almost constant concomitant symptom.

UnresponsivenessInability to respond to antigenic stimulus. Unresponsiveness may be specific for a particular antigen (see tolerance), or broadly nonspecific as a result of damage to the entire immune system, for example after whole body irradiation.

Ulcer

UltrasonographyUsing the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth.

Upper GI endoscopyLooking into the esophagus, stomach, and duodenum with an endoscope. See also endoscopy.

Upper GI seriesX-rays of the esophagus, stomach, and duodenum. The patient swallows barium first. Barium makes the organs show up on x-rays. Also called barium meal.

We thank you for using the Health Dictionary to search for Ulcer. If you have a better definition for Ulcer than the one presented here, please let us know by making use of the suggest a term option. This definition of Ulcer may be disputed by other professionals. Our attempt is to provide easy definitions on Ulcer and any other medical topic for the public at large.